LV 9 DISUIS TOWER

HOW THE TO KILL THIS MOB HE'S ON A 1 TILE SO CANT REALLY MOVE TO HIM SINCE THERES A DEBUFF SAYS CANT TELEPORT AND RANGE LIMITED LOL ! HOW TO KILL THIS GUY. IM WASTING TICKETS TRYING TO FIND A WAY TO KILL THIS GUY IM USING A WARRIOR, DO I REALLY NEED TO CREATE AN ARCHER FOR THIS ? OR MAGICIAN?
probably, either that or hit it with spells. last round lvl 1 tower was wizard does no damage to boss and I couldnt do it